79959547 has 2 divisors, whose sum is σ = 79959548. Its totient is φ = 79959546.

The previous prime is 79959541. The next prime is 79959587. The reversal of 79959547 is 74595997.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79959547 is a prime.

It is not a weakly prime, because it can be changed into another prime (79959541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39979773 + 39979774.

It is an arithmetic number, because the mean of its divisors is an integer number (39979774).

Almost surely, 2^79959547 is an apocalyptic number.

79959547 is a deficient number, since it is larger than the sum of its proper divisors (1).

79959547 is an equidigital number, since it uses as much as digits as its factorization.

79959547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3572100, while the sum is 55.

The square root of 79959547 is about 8942.0102326043. The cubic root of 79959547 is about 430.8142979725.

The spelling of 79959547 in words is "seventy-nine million, nine hundred fifty-nine thousand, five hundred forty-seven".